<template>
  <div>
    <el-form :rules="rules" ref="loginForm" :model="loginForm" class="loginContainer"
        v-loading="loading"
        element-loading-text="正在登录..."
        element-loading-spinner="el-icon-loading"
        element-loading-background="rgba(f,f,f,0.8)"
      >
      <h3 class="loginTitle">登录云办公</h3>
      <el-form-item prop="username">
        <el-input type="text" v-model="loginForm.username" placeholder="请输入用户名" auto-complete="off"></el-input>
      </el-form-item>
      <el-form-item prop="password">
        <el-input type="password" v-model="loginForm.password" placeholder="请输入密码" auto-complete="off"></el-input>
      </el-form-item>
      <el-form-item prop="code">
        <el-input type="text" v-model="loginForm.code" placeholder="点击图片更换验证码" auto-complete="off"
        style="width: 250px;margin-right: 5px"></el-input>
        <img :src="captchaUrl" @click="updateCaptcha">
      </el-form-item>
      <el-checkbox v-model="checked" class="loginRememberMe">记住我</el-checkbox>
      <el-button type="primary" style="width: 100%;" @click="submitLogin">登录</el-button>
    </el-form>
  </div>
</template>

<script>
  export default {
    name: 'Login',
    data() {
      return {
        loginForm: {
          username: 'admin',
          password: '123',
          code: ''
        },
        checked: true,
        rules: {
          username: [{required: true, message:'请输入用户名', trigger: 'blur'}],
          password: [{required: true, message:'请输入密码', trigger: 'blur'}],
          code: [{required: true, message:'请输入验证码', trigger: 'blur'}]
        },
        captchaUrl: '/captcha/getCaptcha?time=' + new Date(),
        loading: false
      }
    },
    methods: {
      updateCaptcha(){
        this.captchaUrl = '/captcha/getCaptcha?time=' + new Date()
      },
      submitLogin(){
        this.$refs.loginForm.validate((valid) => {
          if (valid) {
            this.loading = true;
            this.postRequest('/login/doLogin', this.loginForm).then(resp => {
              // alert(JSON.stringify(resp));
              if(resp){
                // 存储token
                const tokenStr = resp.obj.tokenHead+resp.obj.token;
                window.sessionStorage.setItem('tokenStr', tokenStr);
                // 跳转首页
                // this.$router.replace('/home')
                // 直接输入页面地址，登录后跳转到相应页面
                let path = this.$route.query.redirect;
                this.$router.replace( (path=='/' || path == undefined) ? '/home' : path )
              }
              // 重置数据
              this.loading = false;
              this.updateCaptcha();
              this.loginForm.code = ''
            })
          } else {
            this.$message.error('请输入所有字段！');
            return false;
          }
        });
      }
    }
  }
</script>
<style>
  .loginContainer{
    border-radius: 15px;
    background-clip: padding-box;
    margin: 200px auto;
    width: 350px;
    padding: 15px 35px;
    background: #fff;
    border: 1px solid #eaeaea;
    box-shadow: 0 0 25px #cac6c6;
  }

  .loginTitle{
    margin: 0px auto 40px auto;
    text-align: center;
  }

  .loginRememberMe{
    text-align: left;
    margin: 0px 0px 20px 0px;
  }

  .el-form-item__content{
    display: flex;
    align-items: center;
  }
</style>
